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Page 1187, results 29651 - 29675

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EverVIEW: a visualization platform for hydrologic and Earth science gridded data
Stephanie S. Romañach, Mark McKelvy, Kevin J. Suir, Craig Conzelmann
2015, Computers & Geosciences (76) 88-95
The EverVIEW Data Viewer is a cross-platform desktop application that combines and builds upon multiple open source libraries to help users to explore spatially-explicit gridded data stored in Network Common Data Form (NetCDF). Datasets are displayed across multiple side-by-side geographic or tabular displays, showing colorized overlays on an Earth globe...
Hydroclimatic conditions preceding the March 2014 Oso landslide
Brian Henn, Qian Cao, Dennis P. Lettenmaier, Christopher S. Magirl, Clifford Mass, J. Brent Bower, Michael St. Laurent, Yixin Mao, Sanja Perica
2015, Journal of Hydrometeorology (16) 1243-1249
The 22 March 2014 Oso landslide was one of the deadliest in U.S. history, resulting in 43 fatalities and the destruction of more than 40 structures. We examine synoptic conditions, precipitation records and soil moisture reconstructions in the days, months, and years preceding the landslide. Atmospheric reanalysis shows a period...
Revision of Tympanopleura Eigenmann (Siluriformes: Auchenipteridae) with description of two new species
Stephen J. Walsh, Frank Ribeiro, Lucia H. Rapp Py-Daniel
2015, Neotropical Ichthyology (13) 1-46
The Neotropical catfish genus Tympanopleura, previously synonymized within Ageneiosus, is revalidated and included species are reviewed. Six species are recognized, two of which are described as new. Tympanopleura is distinguished from Ageneiosus by having an enlarged gas bladder not strongly encapsulated in bone; a prominent pseudotympanum consisting of an area on the side of the body...
Catalog of type specimens of recent mammals: orders Didelphimorpha through Chiroptera (Excluding Rodentia) in the National Museum of Natural History, Smithsonian Institution
Robert D. Fisher, Craig A. Ludwig
2015, Book
The type collection of Recent Mammals in the Division of Mammals, National Museum of Natural History, Smithsonian Institution, contains 820 specimens bearing names of 809 species-group taxa of Didelphimorphia through Chiroptera, excluding Rodentia, as of June 2014. This catalog presents an annotated list of these holdings comprised of 788 holotypes,...
Flow management and fish density regulate salmonid recruitment and adult size in tailwaters across western North America
Kimberly L. Dibble, Charles B. Yackulic, Theodore A. Kennedy, Phaedra E. Budy
2015, Ecological Applications (25) 2168-2179
Rainbow and brown trout have been intentionally introduced into tailwaters downriver of dams globally and provide billions of dollars in economic benefits. At the same time, recruitment and maximum length of trout populations in tailwaters often fluctuate erratically, which negatively affects the value of fisheries. Large recruitment events may...
Large fractions of CO2-fixing microorganisms in pristine limestone aquifers appear to be involved in the oxidation of reduced sulfur and nitrogen compounds
Martina Herrmann, Anna Rusznyak, Denise M. Akob, Isabel Schulze, Sebastian Opitz, Kai Uwe Totsche, Kirsten Küsel
2015, Applied and Environmental Microbiology (81) 2384-2394
The traditional view of the dependency of subsurface environments on surface-derived allochthonous carbon inputs is challenged by increasing evidence for the role of lithoautotrophy in aquifer carbon flow. We linked information on autotrophy (Calvin-Benson-Bassham cycle) with that from total microbial community analysis in groundwater at two superimposed—upper and lower—limestone groundwater...
Carbon flow from volcanic CO2 into soil microbial communities of a wetland mofette
Felix Beulig, Verena B. Heuer, Denise M. Akob, Bernhard Viehweger, Marcus Elvert, Martina Herrmann, Kai-Uwe Hinrichs, Kirsten Küsel
2015, The ISME Journal (9) 746-759
Effects of extremely high carbon dioxide (CO2) concentrations on soil microbial communities and associated processes are largely unknown. We studied a wetland area affected by spots of subcrustal CO2 degassing (mofettes) with focus on anaerobic autotrophic methanogenesis and acetogenesis because the pore gas phase was largely hypoxic. Compared with a reference...
Revisions to some parameters used in stochastic-method simulations of ground motion
David Boore, Eric M. Thompson
2015, Bulletin of the Seismological Society of America (105) 1029-1041
The stochastic method of ground‐motion simulation specifies the amplitude spectrum as a function of magnitude (M) and distance (R). The manner in which the amplitude spectrum varies with M and R depends on physical‐based parameters that are often constrained by recorded motions for a particular region (e.g., stress parameter, geometrical spreading, quality factor, and...
Behavioral responses of freshwater mussels to experimental dewatering
Heather S. Galbraith, Carrie J. Blakeslee, William A. Lellis
2015, Freshwater Science (34) 42-52
Understanding the effects of flow alteration on freshwater ecosystems is critical for predicting species responses and restoring appropriate flow regimes. We experimentally evaluated the effects of 3 dewatering rates on behavior of 6 freshwater mussel species in the context of water-removal rates observed in 21 Atlantic Coast rivers. Horizontal movement...
Ahead of his time: Jacob Lipman's 1930 estimate of atmospheric sulfur deposition for the conterminous United States
Edward R. Landa, James B. Shanley
2015, Soil Science (180) 87-89
A 1936 New Jersey Agricultural Experiment Station Bulletin provided an early quantitative assessment of atmospheric deposition of sulfur for the United States that has been compared in this study with more recent assessments. In the early 20th century, anthropogenic sulfur additions from the atmosphere to the soil by the combustion...
Landscape community genomics: understanding eco-evolutionary processes in complex environments
Brian K. Hand, Winsor H. Lowe, Ryan P. Kovach, Clint C. Muhlfeld, Gordon Luikart
2015, Trends in Ecology and Evolution (30) 161-168
Extrinsic factors influencing evolutionary processes are often categorically lumped into interactions that are environmentally (e.g., climate, landscape) or community-driven, with little consideration of the overlap or influence of one on the other. However, genomic variation is strongly influenced by complex and dynamic interactions between environmental and community effects. Failure to...
Quantifying suspended sediment loads delivered to Cheney Reservoir, Kansas: Temporal patterns and management implications
Mandy L. Stone, Kyle E. Juracek, Jennifer L. Graham, Guy M. Foster
2015, Journal of Soil and Water Conservation (70) 91-100
Cheney Reservoir, constructed during 1962 to 1965, is the primary water supply for the city of Wichita, the largest city in Kansas. Sediment is an important concern for the reservoir as it degrades water quality and progressively decreases water storage capacity. Long-term data collection provided a unique opportunity to estimate...
Thermal maturity of Tasmanites microfossils from confocal laser scanning fluorescence microscopy
Paul C. Hackley, Jolanta Kus
2015, Fuel (143) 343-350
We report here, for the first time, spectral properties of Tasmanites microfossils determined by confocal laser scanning fluorescence microscopy (CLSM, using Ar 458 nm excitation). The Tasmanites occur in a well-characterized natural maturation sequence (Ro 0.48–0.74%) of Devonian shale (n = 3 samples) from the Appalachian Basin. Spectral property λmax shows excellent agreement...
Next-generation genomic shotgun sequencing indicates greater genetic variability in the mitochondria of Hypophthalmichthys molitrix relative to H. nobilis from the Mississippi River, USA and provides tools for research and detection
John J Miller, Michael S. Eackles, Jay R Stauffer, Tim L. King
2015, Conservation Genetics Resources (7) 9-11
We characterized variation within the mitochondrial genomes of the invasive silver carp (Hypophthalmichthys molitrix) and bighead carp (H. nobilis) from the Mississippi River drainage by mapping our Next-Generation sequences to their publicly available genomes. Variant detection resulted in 338 single-nucleotide polymorphisms for H. molitrix and 39...
The importance of scaling for detecting community patterns: success and failure in assemblages of introduced species
Craig R. Allen, David G. Angeler, Michael P. Moulton, Crawford S. Holling
2015, Diversity (7) 229-241
Community saturation can help to explain why biological invasions fail. However, previous research has documented inconsistent relationships between failed invasions (i.e., an invasive species colonizes but goes extinct) and the number of species present in the invaded community. We use data from bird communities of the Hawaiian island of Oahu,...
Modeling risk of pneumonia epizootics in bighorn sheep
Sarah N. Sells, Michael S. Mitchell, J. Joshua Nowak, Paul M. Lukacs, Neil J. Anderson, Jennifer M. Ramsey, Justin A. Gude, Paul R. Krausman
2015, Journal of Wildlife Management (79) 195-210
Pneumonia epizootics are a major challenge for management of bighorn sheep (Ovis canadensis) affecting persistence of herds, satisfaction of stakeholders, and allocations of resources by management agencies. Risk factors associated with the disease are poorly understood, making pneumonia epizootics hard to predict; such epizootics are thus managed reactively rather than...
Uranium isotopes and dissolved organic carbon in loess permafrost: Modeling the age of ancient ice
Stephanie A. Ewing, James B. Paces, J.A. O'Donnell, M.T. Jorgenson, M.Z. Kanevskiy, George R. Aiken, Y. Shur, Jennifer W. Harden, Robert G. Striegl
2015, Geochimica et Cosmochimica Acta (152) 143-165
The residence time of ice in permafrost is an indicator of past climate history, and of the resilience and vulnerability of high-latitude ecosystems to global change. Development of geochemical indicators of ground-ice residence times in permafrost will advance understanding of the circumstances and evidence of permafrost formation, preservation, and thaw...
Distribution and floral hosts of Anthophorula micheneri ( Timberlake, 1947) and Hylaeus sparsus (Cresson, 1869), (Insecta: Hymenoptera: Apoidea: Anthophila), with new staterecords in Giles and Loudoun counties, Virginia, eastern USA
Elizabeth A. Sellers, David McCarthy
2015, Check List (11)
New collection records for Anthophorula micheneri (Timberlake, 1947) from Loudoun County and other locations in Virginia, USA document an approximately 1,350 km extension of its previously recorded geographic range. New state records for the rarely seen Hylaeus sparsus (Cresson, 1869) collected in Giles County and from a blue vane trap in Loudoun County, Virginia...
Reservoir area of influence and implications for fisheries management
Dustin R. Martin, Christopher J. Chizinski, Kevin L. Pope
2015, North American Journal of Fisheries Management (35) 185-190
Understanding the spatial area that a reservoir draws anglers from, defined as the reservoir's area of influence, and the potential overlap of that area of influence between reservoirs is important for fishery managers. Our objective was to define the area of influence for reservoirs of the Salt Valley regional fishery...
Advances in interpretation of subsurface processes with time-lapse electrical imaging
Kaminit Singha, Frederick D. Day-Lewis, Tim B. Johnson, Lee D. Slater
2015, Hydrological Processes (29) 1549-1576
Electrical geophysical methods, including electrical resistivity, time-domain induced polarization, and complex resistivity, have become commonly used to image the near subsurface. Here, we outline their utility for time-lapse imaging of hydrological, geochemical, and biogeochemical processes, focusing on new instrumentation, processing, and analysis techniques specific to monitoring. We review data collection...
Robust estimates of environmental effects on population vital rates: an integrated capture–recapture model of seasonal brook trout growth, survival and movement in a stream network
Benjamin H. Letcher, Paul Schueller, Ronald D. Bassar, Keith H. Nislow, Jason A. Coombs, Krzysztof Sakrejda, Michael Morrissey, Douglas B. Sigourney, Andrew R. Whiteley, Matthew J. O'Donnell, Todd L. Dubreuil
2015, Journal of Animal Ecology (84) 337-352
Modelling the effects of environmental change on populations is a key challenge for ecologists, particularly as the pace of change increases. Currently, modelling efforts are limited by difficulties in establishing robust relationships between environmental drivers and population responses.We developed an integrated capture–recapture state-space model to estimate the...
Environmental effects on the aquatic system and metal discharge to the Mediterranean Sea from a near-neutral zinc-ferrous sulfate mine drainage
Franco Frau, Daniela Medas, Stefania Da Pelo, Richard B. Wanty, Rosa Cidu
2015, Water, Air, & Soil Pollution (226) 1-17
After mine closure in the 1980s and subsequent shutdown of the dewatering system, groundwater rebound led to drainage outflow from the Casargiu gallery (Montevecchio mine, SW Sardinia, Italy) beginning in 1997. Mine drainage had pH 6.0 and dissolved concentrations of sulfate (5000 mg/L) and metals (e.g., 1000 mg/L Zn, 230 mg/L Fe, 150 mg/L...
Multiscale geophysical imaging of the critical zone
Andy Parsekian, Kamini Singha, Burke J. Minsley, W. Steven Holbrook, Lee Slater
2015, Reviews of Geophysics (53) 1-26
Details of Earth's shallow subsurface—a key component of the critical zone (CZ)—are largely obscured because making direct observations with sufficient density to capture natural characteristic spatial variability in physical properties is difficult. Yet this inaccessible region of the CZ is fundamental to processes that support ecosystems, society, and the environment....
Characterizing Congo Basin rainfall and climate using Tropical Rainfall Measuring Mission (TRMM) satellite data and limited rain gauge ground observations
Yolande A. Munzimi, Matthew C. Hansen, Bernard Adusei, Gabriel B. Senay
2015, Journal of Applied Meteorology and Climatology (54) 541-555
Quantitative understanding of Congo River basin hydrological behavior is poor because of the basin’s limited hydrometeorological observation network. In cases such as the Congo basin where ground data are scarce, satellite-based estimates of rainfall, such as those from the joint NASA/JAXA Tropical Rainfall Measuring Mission (TRMM), can be used to...
Quantitative attribution of major driving forces on soil organic carbon dynamics
Yiping Wu, Shuguang Liu, Zhengxi Tan
2015, Journal of Advances in Modeling Earth Systems (7) 21-34
Soil organic carbon (SOC) storage plays a major role in the global carbon cycle and is affected by many factors including land use/management changes (e.g., biofuel production-oriented changes). However, the contributions of various factors to SOC changes are not well understood and quantified. This study was designed to investigate the...